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Mueller, N.

Paper Title Page
TUPAN018 The Frankfurt Funneling Experiment 1431
  • N. Mueller, U. Bartz, D. Ficek, P. Fischer, P. Kolb, A. Schempp, J. Thibus, M. Vossberg
    IAP, Frankfurt am Main
  Funneling is a procedure to multiply beam currents at low energies in several stages. The Frankfurt Funneling Experiment is a prototype of such a stage. Our experiment consists of two ion sources, a Two-Beam RFQ accelerator, a funneling deflector and a beam diagnostic system. The two beams from the ion sources are injected into two RFQ beam lines. These two beams are accelerated in a Two-Beam RFQ and combined to one beam axis with a funneling deflector. The last parts of the RFQ electrodes have been replaced to achieve a 3d focus at the crossing point of the two beam axis. The newly designed multigap deflector is adapted to the optimized funneling section. First results and beam measurements with the new setup will be presented.  
THPMN015 Longitudinal Electrode Voltage Distribution on a 4-rod RFQ Simulation Model 2737
  • P. Fischer, N. Mueller, A. Schempp
    IAP, Frankfurt am Main
  For a proper working RFQ with minimized particle losses, a constant longitudinal voltage distribution on the electrodes is needed. This assures a sufficient compensation of the beam space change. The local electrode voltage and its change is mainly given by the varying aperture of the quadrupole and in consequence the changing local capacity. The simulation of the RFQ model with modulated electrodes is a very complex thread. An example for such a model will be given here.